The Orioles scored four runs in the third inning to support Wei-Yin Chen as he picked up his 11th win of the season with a 4-0 victory over the Mariners on Thursday night.

Play At The Plate - In the first inning, James Jones was at third when Robinson Cano hit a ball that Wei-Yin Chen fielded and flipped to Caleb Joseph to get the speedy runner at home.

The play was reviewed to make sure Joseph did not block the plate. It was ruled he did not and the play stood as an out at the plate.

Big Third - The Orioles scored three runs in the top of the third inning off of Mariners pitcher Hisashi Iwakuma.

Nick Markakis drove in the first run picking up his 34th RBI with a single to make it 1-0.

Delmon Young made it 4-0 in the third with a three-run homer, his fourth on the season.

One Bad Inning - Except for the third inning, Iwakuma gave the Mariners seven innings pitched against the Orioles.

Chen Goes Eight - Wei-Yin Chen picked up his 11th win of the season after his 8 innings of shutout pitching against the Mariners.

In The End - Darren O'Day came out of the bullpen to close out the 4-0 victory for the Orioles over the Mariners.

Next WBAL Broadcast - The Orioles and Mariners play game two of their series on Friday night. First pitch is set for 10:10pm with Joe Angel and Fred Manfra starting the broadcast at 9:40pm.

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SEATTLE (AP) -- Wei-Yen Chen allowed five hits over eight innings and Delmon Young hit a three-run homer to give the Baltimore Orioles a 4-0 victory over the Seattle Mariners on Thursday night.

Pitching Details

Chen (11-3), who has won his past four starts, scattered five singles, walked one and struck out three. His 11 wins ties him for third-most in American League. On the road, Chen is 6-1 with a 3.94 ERA in nine starts.

Darren O'Day finished with a routine ninth inning.

It was Baltimore's eighth shutout. The Mariners have been shut out 12 times, tying Tampa Bay for the most in the American League.

The Orioles began their four-run third with singles by John Flaherty, Caleb Joseph and Nick Markakis.

Markakis' single drove in one run and on the next pitch Young hit his fourth homer. It was the Orioles' 123rd of the season, tying Toronto for the most in the majors.

Chen's only hint of trouble came in the first inning.James Jones walked then stole second, the rookie's 20 of the season.

After a groundout, Robinson Cano dribbled a ball in front of the plate. Chen flipped it with his glove to catcher Joseph, who tagged Jones as he slid in head first.

Mariners manager Lloyd McClendon protested the call but it was crew chief Fieldin Culbreth who initiated a TV replay review to determine if Joseph illegally blocked the plate.

After a review of 3:45, the original call was confirmed.

Iwakuma, who had just two three-ball counts, has not walked a batter in a club-record five straight starts, a span of 35 2-3 innings. He is second in club history in walk-less innings behind Cliff Lee's 38, set in June 2010.

Iwakuma has 33 strikeouts against no walks in those five starts.

Dustin Ackley of the Mariners had a single in the second to give him a seven-game hitting streak and push his July average to .373.

NOTES: Beyond the Mariners' acquisition of DH Kendrys Morales from the Twins before the game, the club also added two players from Triple-A Tacoma to the roster. Jesus Montero was called up for a second stint and started at DH. Chris Taylor started at short in his first major league game and singled in the fifth. When he called his parents in Virginia Beach to tell them the news, Taylor said, ''it was tough to hold it together. That moment is something you're never going to forget. Talking to them on the phone, telling them the news, hearing their voices, how excited they were, it's just an indescribable feeling.'' To make room, the club sent RHP Taijuan Walker back to Tacoma and placed INF Willie Bloomquist (right knee contusion) on the 15-day DL. . The Orioles acquired INF Jimmy Paredes from Kansas City for cash considerations. He will report to the minors.